Thermostat housing



FIG. 1 is a perspective view of a thermostat housing;

FIG. 2 is a front elevation view of the thermostat housing of FIG. 1;

FIGS. 3-6 are left, bottom, right and top views of the thermostat housing of FIG. 1; and,

FIG. 7 is a front elevation view of another thermostat housing.

The broken line showing of portions of the housing are included for the purpose of illustrating broken lines and forms no part of the claimed design. 

The ornamental design for a thermostat housing, as shown and described. 